Khimich, A.N., E.F. Galba, and N.A. Vareniuk. “Weighted Pseudoinverse Matrices With Indefinite Weights”. Reports of the National Academy of Sciences of Ukraine, no. 6 (September 8, 2024): 14–20. Accessed March 14, 2025. https://nasu-periodicals.org.ua/index.php/dp/article/view/7525.